Liquid level gauge



FIG. 1 is a top perspective view of a liquid level gauge showing my new design;

FIG. 2 is a bottom perspective view of the opposite side thereof;

FIG. 3 is a top perspective view thereof rotated 90° in a first direction;

FIG. 4 is a bottom perspective view thereof rotated 90° in the second direction;

FIG. 5 is a top perspective view of inner element, the housing having been omitted for ease of illustration;

FIG. 6 is a top perspective view of the opposite side of FIG. 5;

FIG. 7 is a bottom perspective view of FIG. 5 rotated 90°. 

The ornamental design for a liquid level gauge, as shown and described. 